Calculating typewriter



Oct. 23, 1945. H, SCHULER ET AL 2,387,618

CALCULATING TYPEWRITER Filed Oct. 8, 1938 Iwvenfors: Hugo J'cLi/Zer,Haws Gr/JZZ-ner and Eri Drovnlgk Patented Oct. 23, 1945 CALCULATINGmawm'ma Hugo Schiller and Hans Griittner, Cheninltz, and Erich Dronlgke,Sommerda, Germany; vested in the Alien Property Custod ian ApplicationOctober 8. 1938, Serial No. 234,006

Germany October 5, 1937 '7 Claims. (Cl. 235-59) This invention relatesto calculating typewriters having a plurality of vertical or columntotalizers arranged on the paper carriage to travel therewith, and atleast one crossfooter tctallzer arranged on a slide which is guided onthe machine frame.

Acalculating typewriter of this type is described in the U. S. PatentNo. 1,270,471. In such machines there is provided a locking mechanismfor locking the control for the differential ,mechanism of thecalculating typewriter if only one totalizer is in calculating position,that is, if only a vertical totalizer is in calculating position and thecrossfooter totalizer is in its position of rest or if the crossfootertotalizer is in calculating position but no vertical totalizer iseffective.

During a calculating operation the crossfooter tctallzer is alwayscarried along with that one of the vertical totalizers which is incalculating position, and is disengaged from this vertical tctallzerwhen the vertical or column tctallzer leaves the calculating position.The crossfooter tctallzer thereupon jumps back to its position of restto be picked up and carried along with the next vertical totalizer andso on. Calculating typewriters are commonly equipped with a tabulatormechanism for releasing the paper carriage for a column skippingmovement. During such skipping of the paper carriage one or more of thevertical totalizers pass through the calculating position and thecrossfooter tctallzer is carried along by each successive verticaltotalizer as the latter approaches the calculating position.

As the vertical totalizer completes its travel past the calculatingposition, the crossfooter totalizer is disengaged therefrom and thecrossfooter springs back again to its position of rest, thus beingcontinuously moved to and fro. Heretofore, this to-and-fro movement ofthe crossi'ooter totalizer has been prevented by providing means toretain the crossfooter totalizer in its extreme left-hand position, thismeans being connected to the tabulator mechanism. It becomes effectivewhen a tabulator key is actuated and remains effective until theactuated key is released.

When the calculating typewriter is very rapidly operated, it can happenthat a digit-key may be depressed immediately after releasing thedepressed tabulator key. In such event, the digitkey may be depressedbefore the crossfooter tctallzer has returned to its position of restand thus a digit value can be introduced into the totalizers during thejumping-back of the crossfooter totalizer. the digit value being enteredinto a wrong ordinal place of the crossfooter totalizer. Suchmiscalculations can arise because the above mentioned locking mechanismof said patent does not become eflfective until the crossi'ootertctallzer reaches its right-hand end position.

, It is an object of the invention to prevent miscalculations of thekind mentioned. Accordingly, the invention comprises means for actuatinga locking mechanism for a part of the actuating mechanism of thecalculating typewriter in such a manner that this mechanism is lockedduring the jumping-back of the crossfooter totalizer.

According to the present invention this is achieved by providing controlmeans on the slide of the crossfooter totalizer which control means isin continuous operative engagement with the locking mechanism forcontrolling it during movement of the slide.

An example of this mechanism embodying the invention is shown in thedrawing, which illustrates diagrammatically the pertinent portions of acalculating typewriter,

Fig. 1 is a front view showing the parts in writing position before theslide of the crossfooter totalizer has been engaged by a vertical orcolumn tctallzer, and

Fig. 2 is a similar view, showing the parts in calculating position withthe slide of the crossfooter totalizer engaged, through its pick upbeam, by the active column or vertical totalizer.

The machine frame I is equipped with guides 2 on which a slide 3 canshift horizontally. The slide 3 is drawn to the right by a spring 4 andserves to carry a crossfooter totalizer 5. The slide 3 has an arm 6carrying at the left-hand end a pivot pin 1 on which is mounted apick-up beam 8 and a tongue 9. Tension springs Ill and II are providedbetween the beam 8 and the tongue 9 and between the beam 8 and the arm6, respectively. The beam 8 has a lug l2 and the tongue 9 at its freeleft hand end, is provided with an upwardly projecting locking tooth orprojection 9", these parts constituting in known manner a pair of jawsfor releasably holding between them the ear l3 or l3" depending from thevertical or column totalizer l5, l5". respectively. Said columntotalizers are mounted in endwise alignment on the paper carriage H totravel therewith.

A trip lever l'l pivoted at It to the machine frame is connected by arod 2| with one arm of a bell crank lever 23 pivoted to the machineframe at 22, the other arm of which bell crank carries a stop member 24serving to lock the operating shaft 25 of the differential mechanism 28of the machine against rotation, when interposed in front of an arm 21on this shaft.

The above explained mechanism is old and well known in the art, asexemplified in the patent to Wahl, No. 1,270,471, wherein the rock oractuating shaft ll with its finger 460, of Figs. 14, 16 and 21 may beconsidered as similar'to applicants actuatin shaft 25, and Wahls lever283, link 468, and bell crank 465may be considered as the equivalents ofapplicant's lever ll, connecting rod 2! and bell crank 23. Wahl alsoshows the cross footer totalizer, supporting slide and pick-up beam towhich applicant has applied his improvements.

As heretofore stated, this mechanism is open to the objection that, incolumn skipping operations wherein the paper carriage with its columntotalizers travels quickly relatively to the lug I? of the pick-up beam6, each column totalizer by-passed or skipped will engage the pickupbeam and swiftly draw the slide 3 with its crossfooter by a continuousmotion to the extreme left hand limit of travel permitted thecrossfooter. Upon reaching such extreme limit of its traveLcorrespondingto the units of cents position of the crossfooter, the pick-up beam andpick-up beam 8, before the spring 8 will have had time to snap the lug,pick up beam and crossfooter totalizer from the left hand limits to theright hand limits of their travel, due to the fact that the papercarriage with its column totalizers is traveling freely in the oppositedirection at the same time and under the influence of the powerfulcarriage feed spring-drum (not shown).

If, under such conditions, a speedy operator, under the impression thatthe particular totalizer wheel of the selected column totalizer, is inits operative position, prematurely depresses a calculating key, thecorresponding digit will be erroneously entered, not only into thecrossfooter totalizer, but also into the particular column totalizer atthat time traversing the calculating zone, since the presence of acolumn totalizer in the calculating zone releases all the automaticsafeguards against its operation.

To remedy this possible erroneous entry of a digit, this inventionprovides means which enables the crossfooter totalizer to set thelocking mechanism to its effective position at the very beginning of itsspring-drawn return movement towards its normal right hand position,instead of at the end of such return movement, as in the prior art.

Thus, the possibility of improperly entering amounts in the column andcrossfooter totalizers during the return travel of the crossfootertotalizer to its home position is prevented.

For this purpose, one end of a link l8 lying parallel with theconnecting rod 2| is pivotally connected to the trip lever H, theopposite free end of the link extending into the adjacent open end of ahorizontal, hollow socket orsleeve 20 secured to the slide 3, preferablyat the lower end thereof. The lower face of the link rests loosely onthe bottom of the internal cavity of the socket or sleeve, and an archedor humpbacked leaf spring I9 is fastened at one end to the upper face ofthe link, the height of the arched portion of the spring being greaterthan the space between the upper face of the link and the upper face ofthe internal cavity.

When the crossfooter totalizer 5 and its slide 3 are in their normalhome positions, the socket or sleeve 20 is telescoped over the link l8and spring l9 as far as it will go, compressing and flattening thespring so as to effect a strong frictional gripping action between thespring and its link l8, and the socket or sleeve 20.

The return spring 4 which is sufiiciently strong to overcome thefrictional resistance opposed by the leaf spring I9 in its contact withthe wall of the cavity or bore of the socket 20, shifts the slide 3 withits crossfooter 5 and its sleeve 20 to their home positions, where theynormally remain.

In so doing, the contact of the sleeve 20 with the leaf spring l9connected to the link l8, and the resulting resistance opposed by thespring to the telescoping action of the sleeve 20, operates 0 rock thetrip lever ll clockwise. The trip 1 ver, in turn, acting through theconnecting rod 2|, rocks the bell crank 23 counter-clockwise tointerpose the stop member 24 into the path of the arm 21 on theactuating shaft 25.

The trip lever ll by contact with the side wall of the machine frame I,besides limiting the throw of the bell crank 23 and the efiectiveposition of the stop member 25, arrests farther travel of the link i8and spring I9 to the right so that continued movement of the slide 3,and its crossfooter 5 towards their home positions telescopes the sleeve20 of the slide over the sprin l9 and link 58.

In operation, the lug l2 of the pick-up beam 8 is contacted by an ear,as I3, on a column totalizer travelling with the advancin papercarriage, as such column totalizer is entering the calculating zone. Asthe paper carriage continues its advance towards the left to traversethe active column totalizer across the calculating zone, the pick-upbeam is drawn along to advance the slide 3 and crossfooter totalizer 5relatively to its master wheel (not shown) and tween the sleeve and thelink l8, due to the compressed leaf sprin Hi, the link It is drawn tothe left without lost motion between the sleeve and link. The link it,in turn, rocks the trip lever ll counter-clockwise from the positionshown in Fig. 1 to that shown in Fig. 2, and the trip lever, operatingthrough the connecting rod 24, rocks the bell crank 23 clockwise towithdraw the stop member 24 from the path of the arm Zl on the actuatingshaft 25.

In some machines, the paper carriage advances but a single letter spacefrom the moment when it first picks up the lug l2 on the pick-up beam,to the moment when the stop member 24 is withdrawn to ineffectiveposition, during which advance there is no relative movement between thesleeve 20 on the slide 3 and the link It connected to the trip lever ilSince the active column totalizer continues to advance the pickup beam8, together with the slide 3 and its cross totalizer, the impositiveconnection between the slide and the trip lever ll would continue torock said lever and the thereto-connected bell crank an unnecessaryextent, as well as impairing the basic inventive idea of this invention,to avoid which, the connecting rod 25 is provided with an abutment 2iarranged to contact the adjacent side wall of the frame I as thecrossfooter totalizer completes its first step of advance, therebyarrestin farther movement of the trip lever 17 counter-clockwise and ofthe bell crank 23 clockwise, and continued advance of the crossfooter,with its slide 3 and socket or sleeve 20, during and incident to thetraverse of the column totalizer across the calculating zone, operatesto withdraw the socket or sleeve relatively to the link l8 and its leafspring l9. Such withdrawal of the sleeve relaxes the constriction orcompression applied by the sleeve to the leaf spring, resulting in alessening of the strength of the frictional engagement between the linkand sleeve until, as the column and crossfooter totallzers advance toposition their units wheels (not shown) at the calculating zone the gripis almost released, as indicated in Fig. 2 when a wide capacity columntotalizer is in. control of the pick-up beam.

As a result of the entry of the units digit into the column andcrossfooter totalizers and more particularly, the printing of thecorresponding digit, the paper carriage advances a single letter space,which movement disconnects the pick-up beam from the active columntotalizer and the column and crossfooter totalizers pass beyond thecalculating zones, in the manner set forth in the above mentioned Wahlpatent.

The crossiooter totalizer return spring 4 immediately acts to restorethe crossfooter and its slide and pick-up beam to their normal homepositions, and the sleeve 20, because of the remaining slight impositiveconnection through the leaf spring is with the link It, at the verybeginning of the return travel of the crossfooter totalizer, shifts thetrip lever l1 clockwise to restore the stop or blocking member 24 intothe path of its coacting stop arm 21, thus preventing the entry of adigit into either the column totalizer or the crossfooter totalizerduring the return of the crossfooter totalizer to its home position.

This enables the crossfooter and its slide 3 to complete their return tohome position, during which the socket 2o carried by the slidetelescopes over the spring is and link I8, as shown in Fig. l.

A further improvement on the structure disclosed in Wahl Patent1,270,471 above mentioned, resides in the provision of means to insurethat the locking mechanism shall be rendered ineffective, so as topermit the entry of digits into the column and crossfooter totalizers inthose instances where a column totalizer of narrow capacity lies to theright of, and in substantial end-to-end relation with a column totalizerof wide capacity.

In such instances, the ear l3, (Fig. 1) on the left hand columntotalizer of wide capacity will have drawn the pick-up beam 8 and thecrossfooter totalizer connected therewith nearly to their extremeleft-hand positions, to enable the entry of the units digit of an itemin the units wheel of the wide capacity column totalizer l and in theunits wheel of thecrossfooter totalizer 5. The usual let-ofl' or letterspacing step of the paper carriage with its column totalizers followingthe printin of said units digit, operates in the manner disclosed in theWahl patent, above mentioned, to disengage the pick-up beam 8 from theear I3 of the'wide capacity column totalizer, whereupon the crossfootertotalizer return spring i which is superior to the leaf spring !9,operates to restore the crossiooter totalizer 5 and slide 3 towardsnormal position.

Now, assume that it is desired to skip a Wide capacity column totalizer,as l5 and to pick up a narrow column totalizer as 25 located in closejuxtaposition to the wide totalizer. As the paper carriage advances onits column skipping operation, the ear l3 of the wide capacity columntotalizer to be skipped, will engage the pick-up beam 8, and advance thecrossfooter 5 and its slide 3 just as when an amount is to be entered,and in so doing, by the time the units wheel of the wide capacity columntotalizer is brought to the calculating zone, the socket; 20, carried bythe crossfooter slide 3 will have been slid almost out of engagementwith the friction sprin l9, so that, before the disengagement of thepick-up beam 8 from the wide capacity column totalizer, the socket has aweakened frictional engagement with the spring l9.

Immediately upon such release of the pick-up beam 8 from the widecapacity column totalizer, the crossfooter return spring 4 snaps thecrossfooter and its pick-up beam towards the right, but because of thedistance through which the wide column totalizer has drawn the pick-upbeam and crossfooter to the left, and also because of the closeproximity of the narrow capacity column totalizer iii" to the widecapacity column totalizer 55', the ear iii" of the narrow capacitytotalizer engages the retracting pick-up beam 3 after the slide 20 atthe initiation of the return travel of the crossfooter has operatedthrough its contact with the sprin 49 to shift the locking mechanism toits effective position, but before the spring 5 has had time to returnthe crossfooter and pick-up beam to their home positions and thusestablish a firm frictional engagement between the socket 20 and thespring l9.

Not only are the pick-up beam 8 and crossfooter 5 arrested by theengagement of the ear i3" with the shoulder 52 of the pick-up beam, butthe carriage, still operating on its column skipping advance,immediately reverses the direction of travel of the pick-up beam andcrossfooter, to bring the narrow column totalizer to the calculatingzone.

Naturally this abrupt arrest and reversal imparts a shock to thecrossfooter and its socket 2d traveling with the crossfooter in theopposite direction, and since the frictional engagement between thesocket and its friction spring l9 has already been reduced by theextreme leftward travel of the wide capacity column totalizer, pickupbeam, crossfooter and socket there is a possibility that there will notbe a suiilciently strong frictional engagement i e-established betweenthe socket and the spring by the partial return of the crossfooter andits socket, to draw the lever I! to the left and effect displacement ofthe stop member 24 from the path of the stop arm 2'! on the actuatingshaft 25, in which event, no entry of items on either the narrow columntotalizer or the crossfooter could occur, even though the narrow columntotalizer and the crossfooter are in position for the entry thereinto ofthe first digit of an item.

To obviate this possibility when the narrow column totalizer is selectedfor the entry of items therein, the usual tongue or latch 9 is providedwith a depending node a normally lying directly over the depressedmedian portion of a release lever 2t pivoted to the machine frame at 28and lying beneath and in substantial parallelism with the horizontal armof the bell crank 23. (Fig. l.)

The depressed portion of the release lever 29 lies intermediate the endsof said release lever, such end portions or arms lying in a higher planewith the right hand arm closely adjacent the lower edge of thehorizontal arm of the bell crank 23.

In operation, the ears l3 and it" of each column totalizer i5, i5"'asthey pass in succession over the upwardly extending tooth t" of thelatching tongue 9, temporarily depress the tongue with its node 9', thetongue being immediately restored by its spring H to take behind theear.

When the crossfooter totalizer 5 is in its home position,such depressionis without efiect upon the releasing lever 29 because the depending nodea lies over the depressed central portion of said lever. Asthe activecolumn totalizer advances the crossfooter ii step by step past the usualmaster wheel, as explained in the Wahl patent cited, the pick-up bar aand tongue s advance, causing the node of the tongue to wipe over theincline connecting the depressed central portion of the release lever 28with its left hand am, thereby rocking the release levercounter-clockwise and causing its rear end to follow up the horizontalarm of the bell crank 23 which is simultaneously rocked by thecrossfooter totalizer as it advances, through its frictional connectionwith the trip lever it, to displace the stop member 25 from the path itor the co-acting stop arm 27.

In regular operations, the node 9' merely idly rocks the release lever2e.

In those instances wherein the pick-up be 8, after having been advancedto the left a considerable distance and then released from its columnregister, is intercepted on its return before it reaches its homeposition, by the ear of a column register advancing in the oppositedirection, the node 9' of the latching tongue 8 at the time of suchinterception will lie over some portion of the terminal dwell portion ofthe left hand arm of the release lever 29, depending upon the extent towhich it was advanced by the wide capacity totalizer movement.

The return of the pick-up beam 6 with its crossfooter 5, slide or truck3 and socket 211, under the influence of the crossfooter spring I, for adistance of one step has enabled the socket 213 and its friction springconnection is with the link l8, to rock the trip lever l1 clockwise, andthrough the connecting bar 2|, to rock the bell crank 23counter-clockwise and interpose the locking member 24 into the path ofthe arm 21 on the actuating shaft 25 to prevent operation of themachine.

But the gripping action between the socket 2B and the spring l9 due tothe immediately preceding extensive advance of the socket relatively toits friction spring l9, may be insuflicient at this time as heretoforeexplained, to draw the lever l counter-clockwise and through the recitedtrain, displace the locking member 24 from the path of the arm 21 of theactuating shaft.

However, the ear It!" on the interceptin column totalizer of narrowcapacity, as it wipes over the upwardly projecting tooth 9" of thepick-up assaers 2% from the path of the arm 2i on the actuating shaft 25and thus free the machine for operation independently of the frictionalsocket and v humped spring connection.

As soon as this operation is effected, the ear ill" of the columntotalizer escapes past the tooth 9" of the pick-up beam latch 9 which,thus released, returns to its normal position under the action of thespring It and has no further effect on the release lever 29.

We claim as our invention:

1. In a typewriting-accounting machine of the class described, having aframe, and a traveling carriage; a column totalizer mounted on thecarriage; and a cross footer totalizer shiftably mounted on the frame;the combination with a pick-up beam to releasably connect the column andcross footer totalizers to enable the column totalizer, as it approachesits calculating zone, to simultaneously advance the cross footertotalizer from its home position; means to restore the cross footertotalizer and pick-up beam to home position upon release of the pick-upbeam from the column totalizer as the latter escapes past thecalculating zone; an actuating means; and a locking mechanism normallyeffective to lock the actuating means against operation; of a connectioncapable of extension and contraction, to couple the crossfootertotalizer and the locking mechanism, and under the control of thecrossfooter totalizer; and means inferior to the crossfooter totalizerrestoring means to maintain frictional engagement of the connection inany of its relative positions, to enable the crossfooter totalizer. atthe beginning of its advance simultaneously with the column totalizer,to render ineffective the locking mechanism through operation of saidconnection in one direction, and at the beginning of the return of thecrossfooter totalizer toward home position, to restore the lockingmechanism to its effective position.

2. In a typewriting-accounting machine of the class described, having aframe, and a traveling carriage; a column totalizer-mounted on thecarriage; and a crossfooter totalizer shiftahly mounted on the frame,the combination with a. pick-up beam to releasably connect the columnand crossfooter totalizers to enable the column totalizer, as itapproaches its calculating zone. to simultaneously advance thecrossfooter totalizer from its home position; means to restore thecrossfooter totalizer and pick-up beam to. home position upondisconnection of the pick-up beam and column totalizer as the latterescapes past the calculating zone; an actuating means; and a lockingmechanism normally effective to lock the actuating means againstoperation; of a connection capable of extension and contraction, to

couple the crossfooter totalizer and the lockin mechanism, and undercontrol of the crossfooter totalizer, said connection including mutuallytranscursive members; means to maintain frictional engagement of thetranscursive members to enable the crossfooter totalizer, at thebeginning of its advance, to shift the locking mechanism to itsineffective position, and at the beginning of its return to homeposition, to restore the locking mechanism to its effective position;and means to arrest continued release movement of the locking mechanismafter it has been shifted to its inefiective position, while thecrossfooter totalizer continues its advance synchro nously with thecolumn totalizer with a consequent extension of the connection, saidconnection being contracted by the crossfooter totalizer on its returnto home position subsequently to the restoration of the locking means toits effective position.

3. In a typewriting-accounting machine of the class described, having aframe and a traveling carriage; a column totalizer mounted on thecarriage; and a crossfootertotalizer shiftably mounted on the frame; thecombination with a pick-up beam connected with the crossfooter totalizerfor engagement by, and disengagement from, the carriage, to enable thecolumn totalizer and crossfooter totalizer to advance simultaneously;means to restore the crossfooter totalizer and its pick-up beam to homeposition upon disconnection of the pick-up beam and the columntotalizer, as the column totalizer escapes past the calculating zone; anactuating means; and a locking mechanism normally effective to block theoperation of the actuating means; 01 a two-part telescopic connection tocouple the crossfooter totalizer and the locking mechanism; a resilientmember to maintain frictional engagement between the parts of theconnection in any of their relative positions; and means connected withone of the parts of said connection and co-acting with said frame toarrest said part, following the engagement of the pick-up beam and thecolumn totalizer, to enable rel ative movement between the parts of thetelesoopic connection during farther simultaneous travel of thecrossfooter and column totalizers; said resilient member effective toenable the crossfooter totalizer at the beginning of its advance withthe column totalizer, to shift the locking mechanism to its ineffectiveposition, through said connection, and at the beginning of its returntravel, to restore the locking mechanism to its effective position.

4. In a typewriting-accounting machine of the class described, having aframe and a traveling carriage; column totalizers mounted in-suocessionon the carriage; and a crossfooter totalizer shiftably mounted on theframe, the combination with a pick-up beam to releasably connect thecolumn totalizers successively with the crossfooter totalizer as thecolumn totalizers respectively approach the calculating zone, to advancethe crossfooter from its home position; means to restore the crossfootertotalizer and pick-up beam to home position upon disconnection of thepick-up beam and column totalizer as the latter escapes past thecalculating zone; an actuating means; and a locking mechanism to lockthe actuating means against movement; of a connection capable ofextension and contraction, to couple the crossfooter totalizer and thelocking mechanism, and under control of the crossfooter totalizer; meansinferior to the crossfooter restoring means to apply friction to theconnection, to enable the crossfooter totalizer, at the beginning of itsadvance with the column totalizer to shift the locking mechanism to itsineffective position, and at the beginning of its return toward homeposition, to restore the looking mechanism to its eifective position; anauxiliary member operable upon the locking mechanism to release thelatter; and means on said pick-up beam operable by the column totalizerssuccessively to actuate the auxiliary release member after aninterception of the pick-up beam before its return to home position, tocause the auxiliary member to release the locking mechanism in the eventof the failure of said connection to return a sufiicient distance fromits previous advance.

5. In a typewriting-accounting machine of the class described, having aframe and a traveling carriage, column totalizers of various capacitiesmounted on the carriage in any desired order, and a cross footertotalizer shiftably mounted on the frame, the combination with a pick-upbeam to releasably connect the column totalizers successively with thecross-footer totalizer during the travel of each column totalizer acrossthe calculating zone, which advance the crossfooter totalizer differentextents from its home position; means to restore the crossfootertotalizer and pick-up beam to home position upon the disconnection ofthe pick-up beam and the successive column totalizers as the latterescape past the calculating zone; an actuating means; and a lockingmechanism normally effective to lock the actuating means againstoperation; of a frictional connection capable of extension andcontraction to couple the cross-footer totalizer and the lockingmechanism, and under the control of the cross-footer totalizer, tonormally enable the crossfooter totalizer, at the beginning of itsadvance with a column totalizer, to shift the locking mechanism to itsineffective position, and at the beginning of its return towards homeposition, to restore the locking mechanism to its effective position; anormally idle auxiliary member operable independently of the crossfootertotalizer to shift the locking mechanism to its ineffective position;and means on said pick-up beam operable by any of the column totalizersto actuate the auxiliary member in case of the interception of thepick-up beam and crossfooter during their return to home position afterthe crossfooter has rendered the locking mechanism efiective throughsaid connection, but while the connection is inadequate to shift thelocking mechanism to its ineffective position upon the ensuing abruptreversal of the direction of travel of said cross-footer totalizer bythe advancing active column totalizer, said auxiliary member having adwell portion substantially eoextensive with the farthest advance travelof the crossfooter totalizer, for engagement by the actuating means onthe pick-up beam at the time when said active column register upon itsadvance, intercepts the return of the pick-up beam and crossfooterpreparatory to synchronously advancing said pick-up beam andcrossfooter.

6. In a typewriting-accounting machine of the class described, having aframe and a traveling carriage, column totalizers of various capacitiesmounted on the carriage in any desired order and a cross-footertotalizer shiftably mounted on the frame, the combination with a pick-upbeam to releasably connect the column totalizers successively with thecross-footer totalizer during the travel of each column totalizer acrossthe calculating zone, which advance the crossfooter totalizer differentextents from its home position; means to restore the cross-footertotalizer and pick-up beam to home position upon the disconnection ofthe pick-up beam and the successive column totalizers as the latterescape past the calculating zone; an actuating means; and a lockingmechanism normally effective to lock the actuating means againstoperation; of a frictional connection capable of extension andcontraction to couple the cross-footer totalizer and the lockingmechanism, and under the control of the cross-footer totalizer, tonormally enable the cross-footer totalizer, at the beginning of itsadvance with a column totalizer, to shift the locking mechanism to itsineffective position, and at the beginning of its return towards homeposition, to restore the locking mechanism to its effective position; anormally idle auxiliary member operable independently of the crossfootertotalizer to shift the locking mechanism to its ineffective position;and means on said pick-up beam operable by any of the column totalizersto actuate the auxiliary member in case of the interception of thepick-up beam and crossfooter during their return to home position afterthe cross-footer has rendered the locking mechanism effective throughsaid connection, but while the connection is inadequate to shift thelocking mechanism to its ineffective position upon the ensuing abruptreversal of the direction of travel of said cross-footer totalizer bythe advancing active column totalizer; said auxiliary member having aclearance normally in register with the actuating means on the pick-upbeam, to render ineffective said actuating means on the pick-up beamwhen the cross-footer, totalizer and pick-up beam have nearly returnedto their home positions.

7. In a typewriting-accounting machine of the class described, having aframe and a. traveling carriage, column totalizers of various capacitiesmounted on the carriage in any desized order and a cross footertotalizer shiftably mounted on the frame, the combination with a pick-upbeam to reieasably connect the column totalizers successively with thecross-footer totalizer during the travel of each column totalizer acrossthe calculating zone, which advance the cross footer totalizer difierentextents from its home position; means to restore the crossfootertotalizer and pick-up beam to home position upon the disconnection ofthe pick-up beam and the successive column totalizers as the latterescape past the calculating zone; an actuating means; and a lockingmechanism normally efi'ective to lock the actuating means againstoperation; of a frictional connection capable of extension andcontraction to couple the cross footer totalizer and the lockingmechanism, and under the control of the cross-footer totalizer, toenable the cross footer totalizer, at the beginning of its advance witha column totalizer, to shift the locking mechanism to its ineffectiveposition, and at the beginning of its return towards home position, torestore the locking mechanism to its efiective position.

HUGO scr-riiLER. Hans GR. marcrr Daemon.

